St. Mary, MO

Full City Profile · Missouri

3.3 /5.0
B Good
255 Population 425/sq mi density
$57,500 Median Income $23,554 per capita
$97,500 Home Value $221,600 Zillow
$783 Median Rent 32.0% income on rent
56°F Avg Temperature
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$57,500 median income, 6.5% unemployment
A+
Affordability
5.0 / 5.0
$97,500 home value, $783/mo rent
D
Education
1.8 / 5.0
10.6% bachelor's degree or higher
St. Mary enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 79°F in July. Annual precipitation totals 43.9 inches. The area receives 12.0 inches of snow annually.

Temperature

32°F Jan (0°C) 79°F Jul (26°C)
Annual Average56.4°F
4% above US avg
January Average32°F (0°C)
July Average79°F (26°C)

Geography

Elevation453 ft (138 m)
Area0.6 sq mi (1.6 km²)
Population Density425/sq mi
Coordinates37.8726°N, 89.9465°W
TimezoneAmerica/Chicago
Nearest AirportFarmington Regional (FAM)
25 miles away

Precipitation & Snow

Annual Rainfall 43.9"
16% above US avg
Snowfall 12.0"
Wettest Month (May) 5.43"
Driest Month (Feb) 2.63"

Air Quality

Earthquake History

166 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.8. Most recent: M2.7 on May 2, 2025.

Sep 26, 1990 4 km SE of Chaffee, Missouri M4.8 85 km
May 4, 1991 2 km NNW of Risco, Missouri M4.5 145 km
Feb 5, 1994 2 km WNW of Dongola, Illinois M4.2 87 km
Jun 6, 2003 1 km NE of Bardwell, Kentucky M4.0 139 km
Jun 7, 2011 18 km NNW of Potosi, Missouri M3.9 87 km
Feb 21, 2012 4 km SSE of Bertrand, Missouri M3.9 120 km
Mar 2, 2010 2 km ENE of East Prairie, Missouri M3.7 131 km
Jan 2, 2006 3 km NNE of Eldorado, Illinois M3.6 134 km
Jun 20, 2005 4 km WSW of Blandville, Kentucky M3.6 135 km
Sep 22, 2011 6 km E of Grandin, Missouri M3.6 137 km
Mar 15, 2017 9 km ESE of Wyatt, Missouri M3.6 132 km
Jul 16, 2004 6 km SE of Wyatt, Missouri M3.5 131 km
May 1, 2016 5 km SE of New Grand Chain, Illinois M3.5 112 km
Jun 15, 2004 3 km S of Canalou, Missouri M3.5 130 km
Sep 26, 1994 4 km ENE of Blandville, Kentucky M3.4 136 km
Mar 2, 1990 9 km NW of Vernon, Illinois M3.4 128 km
Aug 27, 1993 5 km SSE of Olympian Village, Missouri M3.3 49 km
Feb 6, 1993 6 km NNW of Catron, Missouri M3.3 136 km
Sep 27, 2019 4 km WSW of Howardville, Missouri M3.3 149 km
May 16, 2017 9 km ESE of Wyatt, Missouri M3.3 133 km
Source: USGS (M2.5+, 1990-2025)

Tornado History

594 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 94 fatalities, 1,291 injuries.

Date Rating Distance Fatalities
Dec 18, 1957 EF5 65 km 1
Feb 28, 2017 EF4 17 km 1
Nov 17, 2013 EF4 75 km 2
Sep 22, 2006 EF4 24 km 0
May 29, 1982 EF4 72 km 10
Apr 3, 1981 EF4 96 km 0
Jun 22, 1969 EF4 55 km 4
Feb 10, 1959 EF4 93 km 21
Dec 18, 1957 EF4 88 km 1
Dec 18, 1957 EF4 45 km 11
May 26, 2024 EF3 88 km 0
Dec 10, 2021 EF3 99 km 6
Oct 24, 2021 EF3 45 km 0
Oct 24, 2021 EF3 54 km 0
Nov 17, 2013 EF3 97 km 0
Dec 31, 2010 EF3 83 km 1
Mar 11, 2006 EF3 43 km 0
Mar 11, 2006 EF3 8 km 2
May 6, 2003 EF3 60 km 0
Apr 28, 2002 EF3 78 km 1
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: SMITH MILL HOLLOW (3,978 ac, 2022).

Year Name Acres Distance
2022 SMITH MILL HOLLOW 3,978 93 km
2021 COUNCIL BLUFF 3,035 89 km
2024 COUNCIL BLUFF WEST RX 2,846 89 km
2005 UNNAMED 2,751 90 km
2019 UNNAMED 2,688 98 km
2010 COUNCIL BLUFF LAKE 2,651 89 km
2006 UNNAMED 2,512 89 km
2021 RED SHALE UNIT RX 2,123 79 km
2021 BEAR PAW 2,080 95 km
2024 BEAR PAW RX 2,067 95 km
2004 CICERO CREEK 1,846 95 km
2021 BERRYMAN BLOCK B AND C 1,728 98 km
2015 CARTY 1,674 98 km
2014 UNNAMED 1,627 75 km
2019 ATWOOD RIDGE RX 1,622 75 km
2015 UNNAMED 1,586 89 km
2010 DELBRIDGE SOUTH 1,574 90 km
2000 UNNAMED 1,552 65 km
1999 UNNAMED 1,483 65 km
2020 UNNAMED 1,334 90 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (0°C) 2.7 in Coldest
February 37°F (3°C) 2.6 in Driest
March 46°F (8°C) 3.6 in
April 56°F (13°C) 4.9 in
May 66°F (19°C) 5.4 in Wettest
June 75°F (24°C) 4.3 in
July 79°F (26°C) 4.0 in Warmest
August 77°F (25°C) 3.1 in
September 70°F (21°C) 3.1 in
October 58°F (14°C) 3.1 in
November 46°F (8°C) 4.0 in
December 36°F (2°C) 3.0 in

St. Mary has a seasonal temperature swing of 47°F / from 32°F in January to 79°F in July. Total annual precipitation is 43.9 inches, with May being the wettest month (5.4") and February the driest (2.6").

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